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Growth Kinetics and Structure of Ultrathin Copper Films on the W(110) Surface Studied by Leem

Published online by Cambridge University Press:  21 February 2011

M.S. Altman ,
E.Z. Luo ,
W.F. Chung  and
B.G. Orr
M.S. Altman
Affiliation:
Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
E.Z. Luo
Affiliation:
Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
W.F. Chung
Affiliation:
Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
B.G. Orr
Affiliation:
Department of Physics, University of Michigan, Ann Arbor, Michigan, U.S.A.
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Abstract

Competing desorption during the epitaxial growth of Cu on the W(110) surface has been studied with low energy electron microscopy (LEEM). Direct imaging of a structural transformation from pseudomorphic (1×1) to relaxed (15×1) periodicity which occurs at a coverage of θCu = 2.13 monolayers is used as a very accurate, local probe of coverage during deposition. The desorption energy E = 3.67 eV and attempt frequency v = 2.15 × 1015 s−1 are determined by examining the balance condition when the incident and desorption fluxes are equal. A step-flow-like growth morphology occurs when the supersaturation is significantly reduced by competing desorption. An island nucleation and coalescence growth morphology results at higher supersaturation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 399: Symposium D – Evolution of Epitaxial Structure and Morphology , 1995 , 523
Copyright
Copyright © Materials Research Society 1996

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References

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